The Harry Potter world is a place full of magic, adventure, and positive emotions. Fanfic that has sexual content between Harry and Lily Potter is not only inappropriate but also disrespectful to the characters created by J.K. Rowling. It is not in line with the family - friendly and positive nature of the Harry Potter universe.
One great fanfic could be 'Harry and Lily's Enchanted Bond'. In this story, Lily, being a fairy, might use her magical fairy abilities to help Harry in his adventures at Hogwarts. It could add a whole new dimension to the wizarding world as we know it.
There are several problems. One, it goes against the essence of the Harry Potter story which is about many positive things like friendship and heroism, not this kind of inappropriate relationship. Two, it disrespects the characters and the fans who love the original story for its intended values. Three, it can be very offensive to a large number of people who have an emotional connection to the series.
No, it is not appropriate at all. Harry and Lily have a family relationship in the Harry Potter series. Writing sexual fanfiction involving them violates basic moral and ethical norms, and also goes against the spirit of the original work which is mainly about friendship, magic, and the fight against evil.
In some fanfics, it could be due to a threat she believes she can't protect Harry from. Maybe she thinks that by leaving him, the dark forces won't target him as much.
Perhaps Sirius Black could also be involved. Sirius was Harry's godfather and was very much a part of Harry's life. His presence could add some interesting dynamics, like he could be the one who stumbles upon the magic that makes the meeting possible and then has to deal with the implications of Harry meeting his mother.
In a fanfic, Harry could be developed by showing how he copes with having his mother back in his life. He might have mixed feelings of joy and confusion. Lily could be developed by depicting her reaction to the modern wizarding world that Harry is a part of. She could be both amazed and a bit critical of some of the changes. This would give depth to their characters as they interact and adapt to each other.
It can be very off - putting for many fans. A lot of fans, especially those who grew up with the series, see the characters as symbols of positive values. Such inappropriate fanfic can make them feel disgusted and may even drive them away from the fan community.
Well, a fanfic about Harry and Lily Brerd could explore their relationship in various ways. Maybe it delves into their family bonds, or perhaps it creates some unique adventures for them. It could also show how they interact with other characters in the fan - created world.
Writing fanfic that involves sexual content is generally not appropriate. Fanfiction should focus on positive aspects like character development, new storylines within the boundaries of the original concept, rather than sexualizing the characters.